9) A grandmother is nine times older than her grandson. If she is also 56 years older than him, what is the age of her grandson after 6 years?
a) 7 years
b) 9 years
c) 11 years
d) 13 years

Answer= 13 years

Solution,

Let the age of grandmother be y

Let the age of grandson be X

according to question,

9x=y ( equation I)

X+56=y( equation ii)

Substituting,

9x=x+56

or,9x-x=56

or,8x=56

or,X=56/8

X=7

Again,

Age of grandson after 6 years

=7 years+6 years

=13 years

Hope it helps

Good luck on your assignment

Step-by-step explanation:

9x is grandmother's age.

x is grandson's age.

Her grandson age would be:

After 6 years.

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.